package com.finalcial.util;

import java.io.Serializable;
/**
 * 分页工具类
 * @author admin_yt
 *
 */
public class PageUtil implements Serializable{

	private static final long serialVersionUID = 4165137393192197986L;
	
	private int pageNow = 1;//当前页面
	private int pageSize = 10;//每页显示记录的条数
	private int totalCount;//总的记录条数
	private int totalPageCount;//总的页数
	private int startPos;//开始位置，从0开始
	private boolean hasFirst;//是否有首页
	private boolean hasPre;//是否有前一页
	private boolean hasNext;//是否有下一页
	private boolean hasLast;//是否是最后一页
	/**
	 * 通过构造方法传入 
	 * @param totalCount 总记录数
	 * @param pageNow 当前页
	 */
	public PageUtil(int totalCount, int pageNow) {
		this.totalCount = totalCount;
		this.pageNow = pageNow;
	}
	/**
	 * 取得总页数，总页数 = 总记录数/总页数
	 * @return
	 */
	public int getTotalPageCount() {
		totalPageCount = getTotalCount() / getPageSize(); 
		  return (totalCount % pageSize == 0) ? totalPageCount 
		    : totalPageCount + 1;
	}
	
	public void setTotalPageCount(int totalPageCount) { 
		this.totalPageCount = totalPageCount; 
	}

	public int getPageNow() {
		return pageNow;
	}

	public void setPageNow(int pageNow) {
		this.pageNow = pageNow;
	}

	public int getPageSize() {
		return pageSize;
	}

	public void setPageSize(int pageSize) {
		this.pageSize = pageSize;
	}

	public int getTotalCount() {
		return totalCount;
	}

	public void setTotalCount(int totalCount) {
		this.totalCount = totalCount;
	}
	/**
	 * 取得选择记录的初始位置
	 * @return
	 */
	public int getStartPos() {
		return (pageNow - 1) * pageSize;
	}

	public void setStartPos(int startPos) {
		this.startPos = startPos;
	}
	/**
	 * 判断是否是第一页
	 * @return
	 */
	public boolean isHasFirst() {
		return (pageNow == 1) ? false : true;
	}

	public void setHasFirst(boolean hasFirst) {
		this.hasFirst = hasFirst;
	}
	/**
	 * 判断是否有首页
	 * @return
	 */
	public boolean isHasPre() {
		//如果有首页就有前一页，因为是首页就不是第一页
		return isHasFirst() ? true : false;
	}

	public void setHasPre(boolean hasPre) {
		this.hasPre = hasPre;
	}
	/**
	 * 判断是否有下一页
	 * @return
	 */
	public boolean isHasNext() {
		//如果有尾页就有下一页，因为有尾页表面不是最后一页
		return isHasLast() ? true : false;
	}

	public void setHasNext(boolean hasNext) {
		this.hasNext = hasNext;
	}
	/**
	 * 是否有尾页
	 * @return
	 */
	public boolean isHasLast() {
		//如果不是最后一页就有尾页
		return (pageNow == getTotalCount()) ? false : true;
	}

	public void setHasLast(boolean hasLast) {
		this.hasLast = hasLast;
	}

}
